Description
Replacement Black Case Screw for Sinclair ZX Spectrum 128K +3
This M3.5 x 16mm black pan-head screw is the ideal replacement for the Sinclair ZX Spectrum 128K +3, ensuring your unit stays securely closed and looks as good as it did when it left the factory.
Why Choose the Right Screw for Your +3?
The Sinclair ZX Spectrum 128K +3 chassis relies on specific self-tapping screw dimensions to bite into the plastic pillars without cracking them. Using the wrong thread size or length can lead to damaged screw posts, which are notoriously difficult to repair. Our screws match the original dimensions, ensuring a perfect fit every time.
Technical Specifications
- Size: M3.5 diameter
- Length: 16mm
- Head Type: Pan Head
- Finish: Black (Matches original casing colour)
- Type: Self-Tapping (Designed for plastic enclosures)
Compatibility and Application
These screws are specifically sourced to fit the Sinclair ZX Spectrum 128K +3. While these machines share many aesthetic similarities with other 8-bit computers, the casing depth and pillar thickness of the +3 require this specific 16mm length to ensure the top and bottom case shells are held together firmly.
Installation and Care Tips
When working with vintage plastic cases, it is important to be gentle to ensure the longevity of your machine:
- The “Reverse” Trick: Before tightening, place the screw in the hole and turn it anti-clockwise until you feel the “click” of the threads aligning. Then, turn clockwise to tighten. This prevents you from creating new threads in the plastic, which keeps the screw posts strong.
- Hand-Tighten Only: Always avoid using power drills. Hand-tightening with a suitably sized screwdriver is sufficient and prevents over-tightening.
Note: This listing is for a single screw. Please check how many you require for your specific restoration project. If you are refurbishing a complete case, we recommend replacing all case screws to ensure a uniform appearance.

